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SuperHome Database

Cornwall, Jacobstow, Cottage Farm

House Summary

Paul Sousek

House Type:
17th century farm house with 1980s extension, organic carbon-neutral farm having reduced use of fossil fuels to near zero

Carbon saving:
100%+ (Carbon Negative) - SuperHomes Assessed  

Reported saving on bills:
over 100%: near zero bills plus Fit payments

Total invested:

  • cornwall_jacobstow_cottage_farm_feb12
  • wind_Cornwall_Jacobstow
  • paul sousek and family
  • Paul Sousek
  • Paul Sousek – Award winner
  • Paul and Celia Sousek July2011

Measures installed:

  • Biomass Boiler
  • Cavity Wall Insulation
  • Double Glazing
  • Draught-proofing
  • Loft Insulation
  • Low Energy Lighting
  • Other renewable energy technologies
  • Solar PV Panels
  • Solar Water Heating
  • Thermal Store
  • Wind Turbine
  • Wood Stove

Upcoming events

Early interest in Open Days encourages SuperHome owners to host more events. If you'd like to visit this property please contact the owner and let them know. SuperHomers are often happy to respond to questions about their refurbishment project by email between times. Please read ‘more on contacting this SuperHomer’ before you make contact.

What visitors are saying

"Paul knows a lot about green technologies and he is very generous with his knowledge. The most important thing was to have the opportunity to see how he adapted them and reformed some of the equipment to get more efficiency."

“All decisions backed up with clear economical and scientific analysis. I've learnt a lot.”

“Very informative presentation followed by a tour of the house and grounds where we were able to see it all in action. Very friendly owners, made us feel very welcome.”

“Excellent example of a mix of renewable energies & self-sufficiency with clear explanation of how they can combine - terrific ethics.”

"Paul & Celia gave us a very warm welcome, a thought provoking presentation which generated good questions throughout. They were very generous with their lovely surroundings and time."

“Paul Sousek is clearly enthusiastic. His small scale Bio-diesel plant was particularly interesting.”

"Paul answered many questions during the tour always trying to give both sides of the advantages and disadvantages."

"This was our second visit to Cottage Farm Jacobstow and we were interested to see what developments had been made. It was particularly useful to hear about the Immersun device."

"Thanks very much for hosting the Open Day. It was very interesting to see how the various systems combined to reduce your energy consumption."

"It was a fascinating tour and discussion."

"Very informative afternoon - thank you."

Personal story:

Cottage Farm is an organic, sustainable, carbon neutral farm in Jacobstow, North Cornwall. It is powered by renewable energy with near zero use of fossil fuels, one of the first in the country.

Cottage Farm rear native breeds almost exclusively on grass with minimal use of supplementary fodder. They sell and deliver fresh organic meat boxes by carbon neutral means of transport, in reusable boxes.

Owner Paul Sousek says “Having bought Cottage Farm back in 2005, without any prior farming experience at all, soon after I learned about Peak Oil, our aim was to establish an organic food producing business with a zero carbon footprint, serving our local community and other customers at affordable prices.”


Our aim is to demonstrate that it is possible to farm sustainably and in a resilient manner; that is without using fossil fuels, but still utilising machinery and energy. We believe that the whole agricultural sector could be converted in this manner to be sustainable and resilient in food production.

Every single aspect of the farm, house, lifestyle, travel and involvement in the community is driven by the need for sustainability and resilience.

The farm was converted to organic status and established a herd of local Red Ruby cattle and a flock of native Wiltshire Horn sheep. Cottage Farm now supply their neighbours and others with fresh organic beef and lamb boxes at below the price of conventional meat, due to cutting out fertiliser, feed and energy costs and through removing all intermediaries, selling directly to customers.

Also see:
Property background:

Traditional Cornish cob farm house originally built some 350 years ago (and still standing!) with a 30-year old extension. The cob walls are about a metre wide and much better thermally insulating then the insulated cavity wall of the extension.

Key changes made:

A new unit was launched a few months ago called immerSUN. I bought one for about £400 and now we are using about TWICE as much of our own renewable energy as before, reducing our electricity bill even further.

The unit monitors the total renewable energy produced v. total energy used. Whenever you produce even slightly more than you use, it diverts every last Watt to a) an immersion heater and when the water is as hot as the thermostat allows also to b) night storage heater or indeed any other electrical device of up to 3kW capacity.

You can also link several of these units together to allow you the use of 4 or more night storage heaters or similar devices.

Here are some more details: or email

I was so impressed with the device that we have decided to become distributors, so I can get it for you for just £370, plus 5% VAT. Installation is easy by your own electrician.

I know we have an interest in it, but it is truly magnificent device!

Measures installed in detail:

  • Rayburn wood stove for heating and cooking (£700, reconditioned)
  • Cavity wall insulation in newer part of property
  • Double glazed windows
  • 270mm loft insulation
  • Low energy and LED lights include solar security lights
  • Own bio-diesel produced from waste vegetable oil for a family car, Land Rover and tractor
  • 3kW photovoltaic system, grid connected (£6000)
  • 40 tube solar thermal water heating (£4000)
  • Heat store powered by solar tubes, wood burner and excess electricity. Used for water and also for space heating, utilising existing central heating circuit (£1000)
  • Wind turbine producing up to 5kW, grid connected (£12,000)
  • 6kW Woodwarm wood-burning stove with saddle back boiler, 3kw to water, 3kW to space –  all wood sourced from the farm (£1000)
  • Water from borehole (£8000)
  • immerSUN diverts any surplus renewable electricity to immersion heater (£500)
Benefits of work carried out:

The house was subject to an ‘eco-conversion’, reducing their carbon footprint from 7 tonnes CO2/year to – 1.3 tonnes CO2/year, a decrease of 119%!

As a result it is the first house in Cornwall to have been accepted into the SuperHomes Network (, a charity building up a national network of exemplar energy efficient, older retrofitted homes.

We achieved this SuperHome status by firstly reducing energy consumption with loft and wall insulation, draft proofing, low energy and LED light bulbs, ‘A’ rated appliances, solar security lights and many other measures.

We switched our space heating to a wood burner and wood fuelled Rayburn for cooking and heating. We also installed a Heat Store, which is powered by solar thermal tubes, the wood burner and an immersion heater, to provide hot water and to help heat the house through a connection to the existing central heating circuit. Solar thermal and a wood burner is an excellent combination providing plenty of hot water and space heating 365 days a year.

Electricity is provided by a combination of a wind turbine and solar PV panels, both with on-grid inverters. The combination produces power almost every day of the year.

Water comes from a borehole, pumped using the home grown electricity.

We also make their own 100% bio-diesel from waste vegetable oil. This powers a car, Landrover and the tractor, and is used to deliver the meat boxes. That means that all the work done on the farm, all deliveries and general driving is almost completely CO2 free.

As members of the SuperHomes Network, we hold regular ‘Open Days’ for the public to learn about, see and touch the various energy saving measures and renewable energy devices, as well as enjoying the land and animals on an organic farm walk.

The aim is to inspire others to follow suit, saving ourselves money on energy and improving the prospects of our society surviving the current and future world energy crisis.

Favourite feature:

I have given presentations about our efforts at The Royal Agriculture College, The Transition Network conference, the Eco-Innovations conference held at Westminster Hall, Renewable Energy conference and various other conferences and meetings, including speaking in Parliament to MPs from an All Party Parliamentary Group and numerous local and Transition groups. More on that at (click on Local Food Producers Directory and Cottage Farm).

We are active members of the Tamar Valley Organic Group, a research group of practising organic farmers working with the Duchy College and Clear About Carbon. This year we have over-sown our permanent pastures with an innovative mix of several old varieties of grass, legumes and other fodder plants, such as chicory, lucerne, and yarrow. All these varieties are perennials with extensive root systems and high feed value. The aim is to ensure 100% grass feeding by extending the season in both directions, by achieving high drought resistance and by saturating the soil with root systems to eventually allow overwintering in the fields.

Our sustainability ethos also extends to the type of machinery used. Almost all our machinery was bought second hand, all mechanical with no electronic components and thus maintainable and repairable by local mechanics, helping to maintain local skill base and keep value circulating in the local community.

Another aspect of our methodology is to sell our produce only directly to end customers, cutting out all the intermediaries that would otherwise absorb the majority of the profit, leaving the farmer with a minimal return. We deliver directly to our customers, but limit deliveries to only a few specific days in order to minimize food miles. We also started a local Food Market with local food producers, community and proxy stalls. Our customers receive regular newsletters updating them on developments and explaining the various innovations, our methods and motivations.

To help spread the message, I am a founding member of Transition Cornwall Network and Transition North Cornwall, for which I administer the website:, which is packed with over two and a half thousand items helpful in converting to a sustainable lifestyle and to maximizing resilience. Notable sections include News, Events, Local Food Directory, Local Renewable Energy Suppliers Directory, Local Services Directory, and Learning Section, each with unlimited free space made available to each supplier or source. TransitionNC now has over 1500 members.

Fieldpower Organics: delivering organic produce in London without costing the Earth: our new recently established service, which delivers organic produce from Cottage Farm and later from other local organic farms to London addresses once a month by our carbon neutral transport – the first such service anywhere in the country. See Fieldpower on

In summary, we believe that Cottage Farm is one of the most advanced exemplar organic farms of the future anywhere in the country. We produce food in a sustainable, carbon-sink and resilient manner and are finding that we can do so at a lower price than conventionally produced food. As energy and fertiliser prices soar in the years ahead, this model of farming and living will likely take over from the conventional method. The model is entirely reproducible and expandable to any larger size. Feel free to contact us.

2011/12 finalist BBC Food and Farming Awards in the category of sustainable Farmer of the Year
2010 to 2013 Cornwall Sustainability Awards:
Best Integrated Renewable Energy Scheme in a Building
Best Low Carbon Business
Best Small Scale Renewable Energy Scheme
Best Domestic Renewable Energy Scheme

Also see:

Project update:

6 Jun2014: Another Open Farm Sunday:

6-7Jan2014: Presenting at the Real Farming Conference, Oxford

6Dec2013: Cornwall Sustainability Awards, Atlantic Hotel, Newquay. Won again! Best Integrated Renewable Energy Scheme in a Building and Best Low Carbon Business.

7Nov2013: Truro College meeting with Lord Heseltine and Chris Pomfret (Chairman of the Cornwall and Isles of Scilly LEP)

9-10Oct2013: Presenting at the Soil Association conference, Innovation awards finalist

26Sep2013: Our new 50kW Endurance wind turbine has been commissioned today! Note: this turbine is not included in the costs shown in our house summary as we consider it a farm diversification rather than a house improvement.

22Sep2013: Cottage Farm SuperHome Open Day – overbooked

20Sep2013: Paul giving a presentation at the Atlantic Hotel, Newquay to a group of electricity specialists from Switzerland

17Sep2013: Paul giving a presentation at Cafe Scientific, Launceston, 7:30 pm: Farming and living without fossil fuels

4Aug2013: Cottage Farm featured in Energy Now magazine: and

21Jul2013: Cottage Farm SuperHome Open Day

30June2013: 43 German farmers arrive for a special Open Day to look at our renewable energy equipment and to see our innovative regenerative farming approach. Great success and a bottle of German snapps to boot!

28June2013: as part of the Cornwall Energy Show, the director has brought along to Cottage Farm couple of delegates from Lithuania as well as a few locals for an Open Day: presentation, house tour, outside tour and farm walk.

20June2013: The Endurance wind turbine has been delivered: the tower (4 sections inside each other, the largest some 2m diameter, the blades and the hub. Wasn’t easy getting it through our field gate and over the hedge!

9June2013: Open Farm Sunday – actually a normal monthly SuperHome Open Day, 2pm start, 4 hour duration ending with a farm walk. Geat time, lots of questions, one couple coming back to next Open Day (too much to take in)

13 May 2013: Foundations of our new 50kW wind turbine are in. The turbine itself will be delivered and commissioned in June. This unit will supply clean electricity equivalent to 16 homes.

11 May 2013: today we had two sessions with Cornwall WI, with 16 and 12 participants respectively, just about our maximum. Each sessions lasts 3-4 hours and includes coffee & cake, presentation on what we do, why and how, indoor tour, outdoor tour, organic farm walk. Nobody fell asleep and loads of questions asked! Even had a bit of an argument over the pros and cons of wind turbines with one of the visiting ladies. Excellent feedback, so more sessions may well materialise.

27 April 2013: a coachload of German tourists arrive today with over 20 people participating in a shortened SuperHome session, mostly retired farmers.

10 March 2013: Another highly successful Open Day, part of Climate Week and SuperHomes Week: coffee & cake, presentation on what we do, why and how, indoor tour, outdoor tour, animals incl new calves and lambs and an organic farm walk.

Nov 2012: Fitted immerSUN unit, which monitors our renewable energy production and sends all excess to the immersion heater and/or night storage heater. That about doubles the amount of renewable energy we are able to use directly on site, rather than exporting it to the grid only to be imported back later at much higher cost.

Dec 2012: Won Best Small Scale Renewable Energy Scheme Award.

Nov 2011: Sustainable Farmer of the Year finalist, BBC/Radio4 Food and Farming Awards.

Oct 2011: Highly Commended at Cornwall Sustainability Awards.

Updated on 16/07/2013

Business name:

Cottage Farm Organics

Business overview:

SuperHomer Paul Sousek manages Cottage Farm Organics, an organic farm powered by renewables, delivering fresh organic beef & lamb boxes to your door “without costing the Earth”

Founder member Transition Cornwall, Transition North Cornwall ( and Speaker at national conferences, House of Commons and local groups on the future of energy, food and farming. Paul also hosts resilience workshops.

Cottage Farm is powered by renewable energy with near zero use of fossil fuels. Renewable energy is used to supply bore hole water, space heating, water heating, electricity and transport fuel. Its grass-fed native Red Ruby cattle and Wiltshire Horn sheep produce beautifully marbled, tender meat which is sold at below shop prices.

Common questions and answers for this SuperHome

How have you done so much for £32,000?+

The 50kW turbine we’ve recently added is not counted towards the project – it is not a ‘house’ improvement, it is a farm diversification.

The only subsidies we get are for 2.5kW PV (0.5 kW PV precedes FiTs), everything else was installed prior to FiTs. Turbine was imported direct from China (less than half price, but no subsidies).

We still use some grid electricity, but we also export electricity back to the grid. Overall we generate some 20% more than we consume – and that clean electricity goes in the grid and thus to our neighbours.

Main costs of the home refurbishment were:

Wind Turbine (5kW) £12,000
Solar thermal £4000
PV £6000
Heat Store £1000
Woodburner £1000
Rayburn (reconditioned) £700
immerSun £500

The Bore Hole cost £8000

all inclusive of installation

Contact this homeowner

Assessment types

SuperHomes Assessed

A home that has been visited and assessed by us and confirmed as reaching the SuperHome standard, which demonstrates a 60% carbon saving.

Homeowner Reported

Information has been provided by the homeowner about their home and energy use prior to the installation of measures and following their installation which demonstrates a carbon saving. This information has not been verified.

Remote Assessed

The homeowner has provided information on their home including what measures have been installed which has enables an assessor working on our behalf to assess their carbon savings. This home has not been visited to verify the measures installed.


This home has not been assessed, but the homeowner has reported what measures have been installed. It may be that this home is awaiting assessment.